Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Fixes upstream deployments

    There was an issue with patching the overcloud where the patch binary is
    missing, making it impossible to apply patches.  This change install
    patch now on the image.

    Also, although deployments were successful, storage was not working.
    This is because by default upstream does not apply Ceph OSDs to compute
    nodes for hyperconverged Ceph, but we use this as our standard
    deployment in Apex.  This patch inserts CephOSD into the default Compute
    role.  Note: we normally override role's services in regular Apex
    deployments so we do not hit this issue there.

    Change-Id: I5bddda4784dc00148395863ae0990343a4159602
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 2c26b89..33aebc3 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 2c26b89b546983ec2621f6dce8715873fe6ab774
+Subproject commit 33aebc3b51ce4bc816499a8b68a7feca77a12c6c